日本地球惑星科学連合2019年大会

講演情報

[J] ポスター発表

セッション記号 S (固体地球科学) » S-SS 地震学

[S-SS16] 地殻変動

2019年5月26日(日) 17:15 〜 18:30 ポスター会場 (幕張メッセ国際展示場 8ホール)

コンビーナ:大園 真子(北海道大学大学院理学研究院附属地震火山研究観測センター)、落 唯史(国立研究開発法人産業技術総合研究所 地質調査総合センター 活断層・火山研究部門)、加納 将行(東北大学理学研究科)

[SSS16-P02] Crustal deformation along the Liupanshan fault zone derived from GPS

*Weitao Chen1,2Weijun Gan2Genru Xiao3Shiming Liang2 (1.Development Research Center, China Earthquake Administration、2.Institute of Geology, China Earthquake Administration、3.East China University of Technology)

キーワード:GPS, Crustal Deformation, Liupanshan Fault

The Liupanshan fault zone is located in North Central of North-South Seismic Belt, which is the boundary between the northeastern margin of the Tibetan Plateau and Ordos. This study collected 261 GPS stations distributed around the Liupanshan fault zone. 249 stations are belong to CMONOC and start to observe since 1999, 15 stations are constructed by this study and start to observe since 2013. GPS data are processed with the software GIPSY/OASIS (Version 6.0) from JPL, using the Precise Point Positioning (PPP) strategy and JPL products to obtain daily loosely constrained solutions. The result shows that the northern section of fault zone has a relatively weak left-lateral strike slip and 1.5mm/yr dip slip rate, but no significant difference motion is observed on both sides of the southern section. Furthermore, the maximum principal strain rates indicate that the deformation characteristic of the fault is extrusion, and the value gradually decreases from north to south.